* ['Files'] make the headings such as 'My Libraries' and the library star/unstar icons left-aligned
* ['dir view'] 'path bar' improvement: display the current side nav item(such as 'Files', 'My Libraries', groupname & etc.) in it
* [side nav] improvement: when visit the siteRoot page, highlight the 'Files' tab
* [border color] modified border color in tables & other UIs (so that they are same)